Malware Analysis Report

2025-08-11 06:11

Sample ID 240610-1l3dbasdkp
Target 2024-06-10_f934fae6bfbb6268566f86cd9b38e5ec_cryptolocker
SHA256 2c571c3a1e8a8d5e005c8f2e58124ecb37aa4e10449898c5a4e44a84088476eb
Tags
upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

2c571c3a1e8a8d5e005c8f2e58124ecb37aa4e10449898c5a4e44a84088476eb

Threat Level: Known bad

The file 2024-06-10_f934fae6bfbb6268566f86cd9b38e5ec_cryptolocker was found to be: Known bad.

Malicious Activity Summary

upx

Detection of CryptoLocker Variants

Detection of Cryptolocker Samples

UPX dump on OEP (original entry point)

UPX dump on OEP (original entry point)

Detection of Cryptolocker Samples

Detection of CryptoLocker Variants

Loads dropped DLL

Checks computer location settings

Executes dropped EXE

UPX packed file

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-10 21:45

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
N/A N/A N/A N/A

Detection of Cryptolocker Samples

Description Indicator Process Target
N/A N/A N/A N/A

UPX dump on OEP (original entry point)

Description Indicator Process Target
N/A N/A N/A N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-10 21:45

Reported

2024-06-10 21:47

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_f934fae6bfbb6268566f86cd9b38e5ec_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Detection of Cryptolocker Samples

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

UPX dump on OEP (original entry point)

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\2024-06-10_f934fae6bfbb6268566f86cd9b38e5ec_cryptolocker.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\misid.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-10_f934fae6bfbb6268566f86cd9b38e5ec_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_f934fae6bfbb6268566f86cd9b38e5ec_cryptolocker.exe"

C:\Users\Admin\AppData\Local\Temp\misid.exe

"C:\Users\Admin\AppData\Local\Temp\misid.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp

Files

memory/116-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/116-9-0x0000000000620000-0x0000000000626000-memory.dmp

memory/116-2-0x0000000000750000-0x0000000000756000-memory.dmp

memory/116-1-0x0000000000620000-0x0000000000626000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\misid.exe

MD5 20076eeb62778de2b539f028c7afa874
SHA1 e1b5892d1b295ad42a0d6e8a30231ce9546685ad
SHA256 d18e94dbd0c07915be65c192df3528432cdc1d4d35f020e3aee30f83b122d563
SHA512 fc8df1bf5e7587aa94f933357fe967c946b51463ab3f4dd6c71f2e3edf528865d77e3948deb485421d9a2d379cd1d2fc8d81ada77660a3e59afae6381c2b3713

memory/116-16-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2636-25-0x0000000000520000-0x0000000000526000-memory.dmp

memory/2636-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

memory/2636-26-0x0000000000500000-0x0000000000510000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-10 21:45

Reported

2024-06-10 21:47

Platform

win7-20240508-en

Max time kernel

144s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_f934fae6bfbb6268566f86cd9b38e5ec_cryptolocker.exe"

Signatures

Detection of CryptoLocker Variants

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Detection of Cryptolocker Samples

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

UPX dump on OEP (original entry point)

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\misid.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\2024-06-10_f934fae6bfbb6268566f86cd9b38e5ec_cryptolocker.exe N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-10_f934fae6bfbb6268566f86cd9b38e5ec_cryptolocker.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-10_f934fae6bfbb6268566f86cd9b38e5ec_cryptolocker.exe"

C:\Users\Admin\AppData\Local\Temp\misid.exe

"C:\Users\Admin\AppData\Local\Temp\misid.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp
US 8.8.8.8:53 bestccc.com udp

Files

memory/2224-0-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2224-1-0x0000000000300000-0x0000000000306000-memory.dmp

memory/2224-3-0x0000000000350000-0x0000000000356000-memory.dmp

memory/2224-2-0x0000000000300000-0x0000000000306000-memory.dmp

\Users\Admin\AppData\Local\Temp\misid.exe

MD5 20076eeb62778de2b539f028c7afa874
SHA1 e1b5892d1b295ad42a0d6e8a30231ce9546685ad
SHA256 d18e94dbd0c07915be65c192df3528432cdc1d4d35f020e3aee30f83b122d563
SHA512 fc8df1bf5e7587aa94f933357fe967c946b51463ab3f4dd6c71f2e3edf528865d77e3948deb485421d9a2d379cd1d2fc8d81ada77660a3e59afae6381c2b3713

memory/2224-15-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2596-17-0x0000000000300000-0x0000000000306000-memory.dmp

memory/2596-25-0x0000000000500000-0x0000000000510000-memory.dmp

memory/2596-24-0x0000000000240000-0x0000000000246000-memory.dmp